campbell



(No Model.)

H. P. CAMPBELL.

HOOP PREPARING MECHANISM.

Patented Nox r. 13

5 v re], and this without preliminary soaking.

HENRY- F. CAMPBELL, or oonoonn, NEW HAMPSHIRE.

HOOP-PREPABNG EQHANQ M.

BYEGIFIGATION forming part of Letters Patent hl'o. 288,205, dated November 13, 1883.

' Application filed March 19,1883. (No model.)

-.l'0 all whom it may cortcern: Be it known that I, HENRY F. CAMPBELL,

of Concord, county of Merrimac, State of New Hampshire, have invented an Improveto place the same inwater for a suflicient length -'ment in Hoop-Preparing Mechanism, of which the followlng description, in connection with the accompanyingdrawings, is a specification,

like letters on the drawings representing like parts.

This invention is an improvement on United States Patent No. 272,029, heretofore granted to me, and has for its object to plane and to crimp and bevel or curve the hoop into true circular shape to be applied to a barrel, or to] be put into proper packages for shipment. 1n the use of hand-made hoops having one round side and bark thereon it is customary of time to properly soak and make them sufliciently flexible to be readily bent by hand about and so as to conform to the barrel.

The crimping and bendingportionof the machine herein described so crimps the hoop that the bending portion is enabled to readily bend the same into proper shape to fit a bar- Bending the hoops automatically insures a more even distribution of the bend and the production of a more truly circular hoop at a great saving of time and expense, and the operation of applying and setting half round bark-sided hoops is rendered as rapid and easy as that of setting flat hoops. The hoops being bent uniformly in a substantially true circle enables the employment of metal fastenings, thus obviating the expensive and slow step of making locking-notches such as commonly required in hand-made hoops of the class referred to. In bending half -round bark-covered hoops it is very necessary that the barkv should not be marred or removed,

and also that the hoop should not be split longitudinally by reason of pressure upon its substance of varying thickness from center to edge.

To obviate these diificulties I have devised mechanism for crimping and bending which includes a strong endless yieldingor elastic belt or bed. In my experiment I have tried heavy canvas, leather, and india-rubber, and

about four-plies. This belt serves as asupport for therounded bark-covered side of the hoops, and permits the same, with its knots, warts, and projections, to be embedded into the belt or bed by the pressure of one or more rollers operating against the dressed or planed (side of the hoop. In the present instance I have shown two such rollers, one of which I call the crimping or '-fulcrum roller, as it acts to crimp the hoop, and also serves as a fulcrum over which the hoop is bent. These rollers are both shown as fluted in'the direction of their length, and their projecting ribs are so shaped as to crimp or indent the wood transversely at the dressed side of the hoop at intervals of substantially one-fourth of an inch, thus compelling a uniform circular curving or bending of the hoop, the rounded and irregular bark side of the hoop opposite the crimping-rollers being supported entirely to its edges, no matter what may be its curvature, thus obviating longitudinal splitting. Bypad ding the rollers over which the belt referred to runs either with india-rubber'or other elastic or yielding covering, the danger of splitting is further reduced. In some instances, when bending wide free rift hoops, the rollers referred to, and over which the said belt is extended, may be provided with annular eoncaved or approximately V-shaped grooves. I

have provided the bending mechanism with a discharging device which acts to throw the bent hoop out of the machine, and with an adjustable hoopdifting roller adapted to elevate the said belt beyond the point where the hoop is crimped, thus enabling the hoop to be si'- multaneously crimped and bent in the arc of a circle of greater or less diameter.

. My invention consists, essentially, in a hoo crimping and bending mechanism compre- 'hending a yielding endless traveling belt or bed and a'fiuted crimping-roller, to operate as will be described; also, in the combination, with a yielding or elastic traveling belt or bed and a fluted crimping-roller, of a lifting-roller, whereby the crimped hoop may be bent into the arc of a circle-of greater or less diameter; also, in the combination, with a yielding or elastic traveling belt, crimping mechanism, and hoop-lifting roller, of a discharging device,to operate as will be described;

mechanism embodying my'invention. Fig. 2is:

a planview of all that portion of the said mechanism at the left of the cutter-head, except the discharging device, which is removed. Fig. 3 is a sectional detail of the lefia-hand portion of Fig. 1, showing the hoop-lifting device or roller in another position. Fig. 41s. a detail of one of the under feed-rollers. Fig. 5 is a detail of a part of the. hoop-lifting roller, showing its annular grooves, which are omitted from the drawing Fig. 1; and Fig. 6, a detail of one of the-arms carrying the shaft of the hoop-lilting roller.

The parts lettered B, D, H, a, b, G, F, c, e, d, f, o, m, r, and5 6 are substantially the same as in my patent referred to, soneed not .be herein further described.

7 The underfeeding-roller, a, (shown in Fig. 1 and detached in Fig. 4,) is composed of a series of leather disks alternated with -more flexible or elastic disks'of greater, diameter, preferably india-rubber disks, the latter appearing at such portions of the roller as come directly into contact with the bark when feeding the hoop or hoop material through the machine, the more elastic disks'first coming in contact with the back of the said hoop and yielding to it. The roller a is provided with aseries of annular depressions, as is the roller A shown in the said patent, and also in my earlier patent of the United States, No.

248,021. The'leather disks are marked 2, and

those of rubber (shown in black-see Fig. 4)

are marked 3, and all are held'by nut'sa ona o shaft, 41..

" I desire it to be understood that the rollers marked F Gr may be removed and a roller such as a be used instead.

- The yielding flexible or elastic endless belt 5 b is extended about the rollers F G, and also about the hoop-lifting roller 0 and the roller d, herein shown as adapted to act \s' a take up roller. This belt, preferably of i.1dia-rubber, about four-ply, receives against it the rounded bark. side of the hoop after passing under the presser o, and the knots, warts, and protuberances of the bark side of the said hoop are embedded more or less into the said bolt, the rollers F G below also yielding more or less.

The rollers a b are fluted longitudinally,

and their ribs or projections are so shaped that they indent the dressed or planed side of the hoop transversely at intervals of about onefourth of an inch, thus establishing bendingpoints for the hoop, so that as itfissubsequentlylittedbytheliiting-rollerc,overwhich, as shown, and as I prefer, the belt b. is extended, the said hoop is bent or ,curved univ .6 5 formly in a true circle of greater or. less radius,

according to the position of the hoop-lifting v roller with relation to the roller a, the latter serving as a rolling fulcrum about which the hoop is bent. I

The roller 0 may or may not be covered with a yielding substance, and preferably will be grooved annularly, as in Fig. 5, to obviate.

splitting, especially thin hoops having free rift, orof wood easily split longitudinally, as the grooved surface constitutes a better support for such a hoop out to its edges, from its thicker center.

, The roller 0 has its axis mounted in arms 0,- slotted at c and 0, (shown best in Fig. 6,) to receive the adjusting-bolts 8 9, the said slots being so shaped and the said bolts being solocated that the arms, when moved to elevate or depress the lifting-roller. c, as shown,

respectively, in Figs. 1 and 3, will always be.

moved in the arc of a true circle,thus enabling the gear d on the axis of the roller 0 to continue in engagement with and be driveupositively' by the gear (1, which latter is attached to the shaft of the crimping-roller a, driven as in my former patents." The higher the roller 0 above the under surface of the crimp.

ing-roller the sharper the curve, and the less the diameter of the hoop being bent. The belt b being driven positively by the roller 0 enables the same to act as a-very powerful feeding auxiliary tothe usual feeding device,

especially when a larger knot or a bad crook in a hoop is being drawn between the pressers and the cutter-head on one side and the bedroll on the other side. t

The slack of the belt is taken up and the belt kept .taut by the roller d, mounted, as herein shown, in boxes at theupper end of adjustable arms a. When straight hoops are to be delivered, the roller 0 will occupy the positionFig. 3. The hoop being bent or curved upward about the crimping-roller a as a fulcrum by the roller 0, and also by the belt extended over the roller 0, the hoop is made to pass under the hoop-discharging device g,

herein shown as a bar more or less inclined from a vertical position, according 'to the diameter of the hoop, and curved or beveled at its lower end, as shown in Fig. 1, the said device 9 being held by adjustable arms 9, one of which is shown in Fig. 1, the said arms being held in the desired adjusted position by bolts or screws 9. Each arm 9 and e may be heldin any usual or suitable manner.

The crimped and curved hoop passes out between the roller c or belt and',the lower end ofthe discharging device and is by. the same prevented from coming back over and dropping upon the moving parts of the machine. In some instancesI apply a shield, f, as represented in dotted line,Fig. 1, to further being struck by a hoop as it passes .out from the machine.

defend the moving parts of the machine from I 288.205 I v 3 with bark, could not be crimped and bent without injurious splits, or such marring. of

the bark as will render the hoop unmerchantable.

ism or machine, the gear M on shaft of roller a being properly driven.

It is possible to fairly curve and fashion into hoops hoop-stock nearly seasoned and very free from knots orwarts by means of a smooth surface roller, instead at the fluted crimpingroller a The'roller a, Fig. 4, made as described, is

- composed of disks of different density.

. I claim' rounded on one side ahd having barkthereon,

the crimping-roller to act upon the planed side of the said hoop-stock, and an endless traveling yielding belt, to operate substantially as described.

2. The yielding belt or bed and-crimping 3o or fulcrum roller, combined with a hoop-lifting roller to efl'ect the bending of the hoop over the said crimping or'fulcrum roller, substantially as described. 5 v j The yielding belt or bed, crimping or fulcrum roller above it, and the hoop-lifting roller, combined with a hoop-discharging de- Vice, substantially as shown and described.

4. The endless traveling belt, and rollers G F d, to support it, combined with the. positively-rotated hoop-lifting roller made ad just-- able, substantially as and for the purpose described. I

5. The endless belt, its supporting-rollers V G F d, and positively-rotated roller 0 and rollers a. b, combined with the presser o, and rotating cutter B, and bed-roll D, to operate substantially as described.

6. In a machine for preparing hoops,a feedroller having its surface composed of disks of material of difl'erent density, the more flexible disks first coming in contact with the bark on the hoop, substantiallyas described. 1. In mechanism for bending hoop -'stock In testimony whereof I have signed my name to this specification in the presence of V two subscribing witnesses. h p

HENRY F. CAMPBELL.

I Witnesses: f

GEO. W. GREGORY, B. J. NoYEs. 

